A. Hanslmeier 2 - A. Kucera 3 - J. Rybák 3 - B. Neunteufel 2 - H. Wöhl 4
2 - Institut for Geophysics, Astrophysics and Meteorology
Universitätsplatz 5, A-8010 Graz,
Austria
3 - Astronomical Institute, Slovak Academy of Sciences,
SK-05960 Tatranská Lomnica, Slovakia
4 - Kiepenheuer-Institute für Sonnenphysik,
Schöneckstr. 6, D-79104 Freiburg, Germany
Abstract The dynamics of the upper solar photosphere was studied by using 1-D photospheric line spectrograms obtained at the VTT Observatorio del Teide. Three spectral lines with line core formation heights between 250 and 500~km were analyzed. It is clearly seen that at these levels the velocity and intensity fields are highly correlated but different from the lower lying zone where convective motions predominate.
Key words:: hydrodynamics - line formation - Sun: granulation - Sun: photosphere photosphere - sun: granulation - spectral line: profiles